Comparison

Eco Power Towns vs SumLock

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Eco Power Towns

A strategy puzzle game where players build and manage green energy sources to power a small town. Optimize your layout, research upgrades, and reach energy goals across diverse terrains. Enjoy a peaceful, icon-driven experience with no ads or tracking.

Highlights
  • Build solar, wind, tidal, and biomass energy sources
  • Manage limited resources and optimize layouts
  • Research upgrades for improved efficiency
  • Icon-driven gameplay with no text
  • Handcrafted levels with increasing challenge
  • Peaceful lo-fi music and minimalist art style
Features
Read full description

Can you power a tiny town.. sustainably? Eco Power Towns is a thoughtful strategy puzzle where every placement matters. Generate clean energy using solar, wind, tidal and biomass technologies; all while managing your limited resources. Upgrade, research, and optimize your layout to reach the energy goal and light up all the cozy homes. What to expect? - Contains no text at all: the entire game is icon-driven and intuitive. - Build solar panels, windmills, biomass plants, tidal generators and more. - Hints are available in case you get stuck on a level. - Reach energy goals before you run out of resources - Light up cozy houses across forests, swamps, hills, and rocky terrain - Unlock research upgrades to improve your production efficiency - Explore handcrafted levels of increasing challenge - Solve satisfying puzzles that reward careful planning - Enjoy peaceful lo-fi beat vibes and a clean, minimalist art style - A paid game: no ads, no tracking, no distractions, no data collected - Haptic Feedback - Game Center & Achievements I'm a solo game developer who made this game with a lot of care and love. I hope Eco Power Towns brings you a little joy, a little challenge, and a lot of cozy energy.

About

SumLock

Engage your mind with a unique number puzzle game that combines logic, arithmetic, and deduction. Crack a 6-digit code within limited attempts, ensuring each guess uses unique digits that sum to a target value. Enjoy a satisfying brain workout with color-coded clues and build your winning streak.

Highlights
  • Crack 6-digit master code
  • Unique digit and sum challenges
  • Color-coded feedback clues
  • Build winning streaks
  • Daily brain workout
  • Haptic feedback
Features
Read full description

Have you ever wanted a brain teaser that perfectly combines logic, math, and the pure satisfaction of cracking a safe? SumLock is the answer. Most puzzle games rely entirely on vocabulary or repetitive patterns. SumLock is different. It’s a beautifully dark, immersive numbers game where you use deduction and quick arithmetic to break open a 6-digit master code. Crack the Master Code: You have exactly 4 attempts to break the lock. Each row forces you to think strategically, shifting your digits as you hunt for the hidden combination. The Ultimate Math Challenge: There's a catch! Every single guess must consist of 6 completely unique digits, and their total sum must exactly match the Target Sum displayed at the top of your screen. It's a brilliant double-layer challenge for your mind. Color-Coded Clues: Hit "LOCK IN" to submit your combination and see how the vault reacts. Green means the digit is in the perfect spot; Blue means it's part of the code but needs to move; Red means it's not in the code at all. Build Your Winning Streak: Keep your mind sharp and see how many locks you can open in a row. Save your records automatically and push yourself to beat your personal best streak. Why SumLock? Because giving your brain a quick daily workout should be satisfying, crisp, and fun. Complete with clean haptic feedback, daily reminders, and a distraction-free layout, SumLock is the perfect ritual to test your reasoning skills. Download SumLock today—the ultimate challenge to see if you can break the code.

Screenshots

Eco Power Towns4 screens
SumLock3 screens

Verdict

The call

The clearest difference is rating: SumLock at 5.0 against Eco Power Towns's 4.4. SumLock also leads on price ($0.99 vs $1.99). Eco Power Towns's advantage is ads (none vs shown) and ratings volume (89 vs 1). On in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Eco Power Towns costs $1.99 and SumLock $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

SumLock holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Eco Power Towns has 89 ratings behind it against 1, so its average is the more settled of the two.

Scorecard6 real differences · 4 level
Eco Power Towns versus SumLock: the parameters behind the verdict, then further details
ParameterEco Power TownsSumLock
Price$1.99$0.99 — better
Rating4.4 (89 ratings)5.0 (1 ratings) — better
Positive reviews57.4% of reviews—
Number of ratings89 — better1
Update frequencyMonthly—
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS12.0 — better17.6
Further details — not scored
Size36 MB5 MB
Age rating4+4+
DeveloperTepes OvidiuH Valeur

Bugs and requests

Eco Power Towns

Reported bugs

2 issues
  • Level 3 is very difficult to understand
  • Randomly placing solar panels is not fun

Requested features

2 requests
  • More levels please!
  • Tutorial or reference to explain the chart

SumLock

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Eco Power Towns

No in-app purchases

None

SumLock

No in-app purchases

Questions

Is Eco Power Towns free?
Eco Power Towns costs $1.99, with no in-app purchases.
Is SumLock free?
SumLock costs $0.99, with no in-app purchases.
Which has better reviews, Eco Power Towns or SumLock?
SumLock is rated higher. Eco Power Towns averages 4.4 out of 5 from 89 ratings, while SumLock averages 5.0 from 1 ratings.
Do Eco Power Towns or SumLock have ads?
SumLock shows ads; Eco Power Towns does not.

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